javax.servlet.http
Interface HttpSessionActivationListener

All Superinterfaces:

java.util.EventListener

public interface HttpSessionActivationListener

extends java.util.EventListener

Objects that are bound to a session may listen to container
events notifying them that sessions will be passivated and that
session will be activated. A container that migrates session between VMs
or persists sessions is required to notify all attributes bound to sessions
implementing HttpSessionActivationListener.